中文摘要：

通过实验研究了在受限空间与非受限空间中乙醇扩散小火焰的结构特性,并且比较了在不同大小的受限空间中的火焰形态,对比分析了燃烧器在受限空间中不同的位置时火焰的特性。实验发现,受限空间的大小对火焰的结构形态存在一定的影响,随着受限空间的增大,火焰稳定燃烧的范围就越大,而在同一受限空间中不同的位置对火焰形态没有影响或影响不大。

英文摘要：

The structural characteristics of ethanol diffusion flamelet in the confined space and unconfined space were studied experimentally.The flame shapes in the confined space of different sizes were compared.The structural characteristics of flame with the burner in the confined space of different positions were comparatively studied.The experiment results show that the size of the confined space has a certain impact on the structural characteristics of flame.With the confined space size increased,the stable combustion scope of flame become wider.Different positions have no effect or little effect on the flame shape in the same limited space.